(Newser)
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Presidential hopeful Rudy Giuliani left a St. Louis hospital in "high spirits" today after spending the night there with flu-like symptoms, the New York Times reports. The GOP candidate started feeling sick while campaigning yesterday; shortly after his plane took off for New York, his condition deteriorated. After consultation with his doctor, the plane turned back, and he checked into the hospital.

"The results of all the tests are normal," said a spokesman. But few additional details emerged about the unusual turn of events. Giuliani was treated for prostate cancer in 2000 but says he has been in good health since and is screened every six months. His symptoms developed after a grueling day spent driving across Missouri to campaign events because his plane was grounded with mechanical trouble.